Apparatus for illuminating cars of cable roads



(No Model.) 3 Sheets-Sheet 1.

0. E. SORIBNER & E. P. WARNER. APPARATUS FOR ILLUMINATING CARS 0F CABLEROADS.

No. 469,873. Patented Mar. 1, 1892.

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G. E. SORIBNER 8: E. P. WARNER. APPARATUS FOR ILLUMINATING (JARS 0FCABLE ROADS.

No. 469,873. Patented Mar. 1, 1892.

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G. E. SGRIBNER 80 E. P. WARNER.

APPARATUS FOR ILLUMINATING CARS 0F CABLE ROADS.

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mm W r ISM w M? a 7 UNITED STATES PATENT OFFICE.

CHARLES E. SCRIBNER AND ERNEST I. \VARNER, OF CIIICAGO, ILLINOIS,ASSIGNORS TO THE IVESTERN ELECTRIC COMPANY, OF SAME PLACE.

APPARATUS FOR ILLUMINATlNG CARS OF CABLE ROADS.

SPECIFICATION forming part of Letters Patent No. 469,873, dated March 1,1892.

Application filed October 13, 1891. Serial No. 408,567. (No model.)

To all whom it may concern.-

Be it known that we, CHARLES E. SCRIBNER and ERNEST P. IVARNER, citizensof the United States, residing at Chicago, in the county of Cook andState of Illinois, have invented a certain new and useful Improvement inApparatus for Illuminating Cars of Cable Roads, of which the followingis a full, clear, concise, and exact description, reference being had tothe accompanying drawings, forming a part of this specification.

Our invention relates to apparatus for the electric illumination of carsof cable roads. Its object is to provide means for keeping a dynamomounted upon a car in constant rotation, whether the car be in motion ornot. To accomplish this we provide a pulley in connection with thecar-axle, or with a separate wheel rolling upon the track, which pulley,through intermediate gear, serves to communicate rotary motion to thedynamo while the car is in motion, and a second pulley in connectionwith a wheel bearing upon the cable, which serves to give motion to thedynamo while the car is at rest. Motion may be transmitted to the dynamoeither directly, by belts from the two pulleys to the dynamo, or bymeans of a special form of gear. In the former case the field-magnetsand the armature of the dynamo are both constructed so as to be capableof independent rotation. The field-magnets are belted to one of thepulleys and the armature to the other. The belts are arranged so thatthe field-magnets and armature shall revolve in opposite directions. Itis plain that while the car is notin motion the pulley which bears uponthe cable is kept in continuous rotation by the passage of the cableover it. This motion is communicated to the field-magnets of the dynamo.On the other hand, while the car is securely gripped to the cable thereis no rotation of the wheel bearing upon the cable, and thefield-magnets remain stationary. The armature, however, is now kept inrotation by the rotation of the car-wheels as they roll upon the track.hen the car is not securely gripped to the cable, there may be somerelative motion between the car and the cable and some relative motionbetween the car and the track. In this case the field-magnets arerevolved in one direction with a speed depending upon the relativemotion between the car and cable, and the armature is revolved in theopposite direction with a speed depending on the relative motion of thecar and track. Obviously the dimensions of the driving and drivenpulleys may be chosen so as to secure a constant relative speed ofrotation between the armatu re and field-magnets of the dynamo, whetherthe car be in motion with the same speed as that of the cable or withless, or be standing still, and thus a constant electro-motive force orcurrent may be maintained.

\V hen our specialgear is employed to transmit motion to the dynamo, thelatter may be of the ordinary construction. This gear consists of twomiter gear-wheels secured to separate shafts whose axes are in the samestraight line, and a third idle miter-wheel meshing with both the othersand secured in a separate block adapted to revolve in the same plane asthe two miter-wheels. In this compound gear, when either of the shaftsis revolved while the other remains stationary, the

idle-wheel is rolled around upon the miterwheel of the stationary shaft,and hence the block carrying the idle-wh eel is given a rotary motion inthe same direction as that of the moving shaft. iVhen this device isemployed So Our invention is illustrated in the accomo panying drawings.

In the drawings, Figure 1 is a plan of a dynamo whose fields andarmatures are both capable of rotation in connection with our mechanismfor maintaining constant speed of 5 rotation. Fig. 2 is a verticalsection through the axis of the armature. Fig. 3 is a side elevationshowing, also, the mechanism of the grip and the disposition of ourinvention in connection therewith. Fig. 4 is a plan of the too compoundgear in connection with our mech- Fig. 5 is a vertical secanism and adynamo.

The effect of this detion through the axis of the compound gear, showingmore clearly its construction. Fig. 6 is a side elevation of the gearbelted to a dynamo.

\Ve will designate parts in the drawing by letters of reference, likeparts being indicated by similar letters of reference'in the severalfigures. I

Referring to the drawings, a is the cable.

Z) is a wheel bearing upon the cable.

0 is a grooved pulley secured to wheel I).

In Fig. 3 it will be seen that the wheel I) is journaled upon the frameof the grip mechanism d and supports the cable when the latter isreleased by the grip. The grip mechanism itself We need not describe indetail, as it is Wholly immaterial in our invention.

a is a pulley mounted upon the' axle f of the car-wheels.

Referring to Figs. 1, 2, and 3, the dynamo 9 consists of thefield-magnets h h, which'are of such form as to be capable of easyrevolution. The fields are provided with lateral extensions it" ofsome-non-magnetic material, which encircle the ends of the armature. Theends of these extensions are shaped into the sleeves k k, whichconstitute bearings upon which the fields are journaled. The armature Zis of the usual construction. Its shaft Z is journaled in the sleeves itit. Thus the fields and armatures are both capable of.

independent rotation. The current from the armature is collected by thebrushes Z F, attached to the frame of the machine, and is delivered fromthe dynamo at the springs Z F. The armature-shaft carries the pulley m,which is connected by abelt passing through the slot inthe conduit tothe wheel 0. One of the sleeves k of the field-frame carries the pulleym, which is belted to the pulley c. When the car is stationary, thefields h h also remain stationary, while the wheel b is kept inrevolution by the passage of the cable over it. If, however, the car isin motion with the cable, the cable is stationary with reference towheel 1), while the fields h h are kept in rotation in the oppositedirection'by the car-Wheels rolling upon the track.

Referring now to Figs. 4, 5, and 6, We will proceed to describe thecompound gear in detail. 0 0 are shafts journaled at o 0 0 0 and movableindependently. Rigidly secured to them are the miter-gears p 19. It ispreferable that there should be two or more of the idle-wheels q q, inorder to preserve the balance of the mechanism. All the gears may be ofthe same diameter. The Wheels qq' are journaled in the block 1". Thisblock serves,

also, to support the shafts 0 0 and is free to revolve upon them. Apulley-s upon the shaft 0 is connected by belt to the wheel I) and thepulley 8 upon shaft 0 to wheel 0', as in the apparatus before described.The block r is circular, and its periphery is adapted to receive a beltt, by which it is connected to the dynamo u. When now the car isstationary, the gear-wheel p is also stationary, while the wheel 19 isbeing rotated by the passage of the cable over wheel 1). Hence throughthe instrumentality of the Wheels q q, which roll upon the stationarywheel 19, the block r is caused to rotate in the same direction as theshaft and at half the angular velocity of shaft 0. When the car isfirmly gripped to the cable, the shaft 0 becomes stationary, while theshaft 0 revolves, causing a revolution of the block 1' still in the samedirection. hen, however, the car is going slowly-say at half the speedof the cable-both shafts 0 and o are rotating with the same angularvelocity, equal to one-half that of either when the other wasstationary. Hence the wheels q q would roll upon neither of the wheels19 19, and the block r would be carried round with the same angularvelocity as when the car was stationary or at full speed. Having thusdescribed our invention. we claim as new and desire to secure by LettersPatent- 1. The combination, with a moving cable, of a rotary wheel fixedto the car and in contact with the cable, adapted to transmit rotarymotion to parts of a mechanism, and asec- 0nd wheel journaled to the carand adapted to roll upon a rail or plane when the car is in motion andto transmit rotary motion to other parts of the said mechanism,substantially in the manner described.

2. The combination, with a cable car, of a wheel attached to the car andresting upon the cable, adapted to communicate rotary motion to thefield-magnets of a dynamo upon the car, and a second wheel attached tothe car and resting upon a stationary plane or rail, adapted tocommunicate rotary motion in the opposite direction to the armature ofthe dynamo, substantially as described.

3. The combination, with a moving cable and a car. adapted to be securedthereto, of a wheel attached to the car and resting in contact with thecable, adapted to communicate rotary motion to one part of. a mechanismupon the car, another wheel attached to the car, resting upon. astationary plane or rail and adapted to communicate rotary motion toanother part of said mechanism, and intermediate bodies or mechanismadapted to convert the reciprocal-rotary motion of the two parts of saidmechanism into a continuous rotation in a constant direction of aconductor in relation to a magnetic field, substantially as described.

In witness whereof we hereunto subscribeour names this 14th day ofSeptemben'A. D.

ITO

